1 | /* |
2 | * Copyright (c) 2016 Hisilicon Limited. |
3 | * |
4 | * This software is available to you under a choice of one of two |
5 | * licenses. You may choose to be licensed under the terms of the GNU |
6 | * General Public License (GPL) Version 2, available from the file |
7 | * COPYING in the main directory of this source tree, or the |
8 | * OpenIB.org BSD license below: |
9 | * |
10 | * Redistribution and use in source and binary forms, with or |
11 | * without modification, are permitted provided that the following |
12 | * conditions are met: |
13 | * |
14 | * - Redistributions of source code must retain the above |
15 | * copyright notice, this list of conditions and the following |
16 | * disclaimer. |
17 | * |
18 | * - Redistributions in binary form must reproduce the above |
19 | * copyright notice, this list of conditions and the following |
20 | * disclaimer in the documentation and/or other materials |
21 | * provided with the distribution. |
22 | * |
23 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
24 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
25 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
26 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
27 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
28 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
29 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
30 | * SOFTWARE. |
31 | */ |
32 | |
33 | #include <linux/pci.h> |
34 | #include <rdma/ib_addr.h> |
35 | #include <rdma/ib_cache.h> |
36 | #include "hnae3.h" |
37 | #include "hns_roce_device.h" |
38 | #include "hns_roce_hw_v2.h" |
39 | |
40 | static inline u16 get_ah_udp_sport(const struct rdma_ah_attr *ah_attr) |
41 | { |
42 | u32 fl = ah_attr->grh.flow_label; |
43 | u16 sport; |
44 | |
45 | if (!fl) |
46 | sport = get_random_u32_inclusive(IB_ROCE_UDP_ENCAP_VALID_PORT_MIN, |
47 | IB_ROCE_UDP_ENCAP_VALID_PORT_MAX); |
48 | else |
49 | sport = rdma_flow_label_to_udp_sport(fl); |
50 | |
51 | return sport; |
52 | } |
53 | |
54 | int hns_roce_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr, |
55 | struct ib_udata *udata) |
56 | { |
57 | struct rdma_ah_attr *ah_attr = init_attr->ah_attr; |
58 | const struct ib_global_route *grh = rdma_ah_read_grh(attr: ah_attr); |
59 | struct hns_roce_dev *hr_dev = to_hr_dev(ib_dev: ibah->device); |
60 | struct hns_roce_ib_create_ah_resp resp = {}; |
61 | struct hns_roce_ah *ah = to_hr_ah(ibah); |
62 | int ret = 0; |
63 | u32 max_sl; |
64 | |
65 | if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08 && udata) |
66 | return -EOPNOTSUPP; |
67 | |
68 | ah->av.port = rdma_ah_get_port_num(attr: ah_attr); |
69 | ah->av.gid_index = grh->sgid_index; |
70 | |
71 | if (rdma_ah_get_static_rate(attr: ah_attr)) |
72 | ah->av.stat_rate = IB_RATE_10_GBPS; |
73 | |
74 | ah->av.hop_limit = grh->hop_limit; |
75 | ah->av.flowlabel = grh->flow_label; |
76 | ah->av.udp_sport = get_ah_udp_sport(ah_attr); |
77 | ah->av.tclass = get_tclass(grh); |
78 | |
79 | ah->av.sl = rdma_ah_get_sl(attr: ah_attr); |
80 | max_sl = min_t(u32, MAX_SERVICE_LEVEL, hr_dev->caps.sl_num - 1); |
81 | if (unlikely(ah->av.sl > max_sl)) { |
82 | ibdev_err_ratelimited(&hr_dev->ib_dev, |
83 | "failed to set sl, sl (%u) shouldn't be larger than %u.\n" , |
84 | ah->av.sl, max_sl); |
85 | return -EINVAL; |
86 | } |
87 | |
88 | memcpy(ah->av.dgid, grh->dgid.raw, HNS_ROCE_GID_SIZE); |
89 | memcpy(ah->av.mac, ah_attr->roce.dmac, ETH_ALEN); |
90 | |
91 | /* HIP08 needs to record vlan info in Address Vector */ |
92 | if (hr_dev->pci_dev->revision == PCI_REVISION_ID_HIP08) { |
93 | ret = rdma_read_gid_l2_fields(attr: ah_attr->grh.sgid_attr, |
94 | vlan_id: &ah->av.vlan_id, NULL); |
95 | if (ret) |
96 | goto err_out; |
97 | |
98 | ah->av.vlan_en = ah->av.vlan_id < VLAN_N_VID; |
99 | } |
100 | |
101 | if (udata) { |
102 | memcpy(resp.dmac, ah_attr->roce.dmac, ETH_ALEN); |
103 | ret = ib_copy_to_udata(udata, src: &resp, |
104 | min(udata->outlen, sizeof(resp))); |
105 | } |
106 | |
107 | err_out: |
108 | if (ret) |
109 | atomic64_inc(v: &hr_dev->dfx_cnt[HNS_ROCE_DFX_AH_CREATE_ERR_CNT]); |
110 | |
111 | return ret; |
112 | } |
113 | |
114 | int hns_roce_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr) |
115 | { |
116 | struct hns_roce_ah *ah = to_hr_ah(ibah); |
117 | |
118 | memset(ah_attr, 0, sizeof(*ah_attr)); |
119 | |
120 | rdma_ah_set_sl(attr: ah_attr, sl: ah->av.sl); |
121 | rdma_ah_set_port_num(attr: ah_attr, port_num: ah->av.port); |
122 | rdma_ah_set_static_rate(attr: ah_attr, static_rate: ah->av.stat_rate); |
123 | rdma_ah_set_grh(attr: ah_attr, NULL, flow_label: ah->av.flowlabel, |
124 | sgid_index: ah->av.gid_index, hop_limit: ah->av.hop_limit, traffic_class: ah->av.tclass); |
125 | rdma_ah_set_dgid_raw(attr: ah_attr, dgid: ah->av.dgid); |
126 | |
127 | return 0; |
128 | } |
129 | |